export function getCurrentDateTime() {
  const date = new Date();
  const year = date.getFullYear();
  // 补零：不足两位则前面加 0
  const month = String(date.getMonth() + 1).padStart(2, '0');
  const day = String(date.getDate()).padStart(2, '0');
  const hour = String(date.getHours()).padStart(2, '0');
  const minute = String(date.getMinutes()).padStart(2, '0');
  const second = String(date.getSeconds()).padStart(2, '0');
  
  return `${year}-${month}-${day} ${hour}:${minute}:${second}`;
}
